Knitting machine



Oct. 6, 1931. F. I sslG KNITTING MACHINE Filed Jan. 29. 1930 2Sheets-Sheet 1 Oct. 6, 1931. F. LsslG KNITTING MACHINE 2 Sheets-Sheet 2Filed Jan. 29, 1950 Patented Oct. 6, 1931 UNITED STATES NPATENT" orf-ICEFRITZ Lssrs, on CHEMNITZ, GERMANY, AssIeNon To THE Eran SCHUBERT assLzEn IIASCHINENEABRIKYAKTIENGESELLSCITAET, or CHEMNITZ, GERMANYKNITTING Application led January 29, 1930; Serial No My inventionrelates to hosier machines and more es ially to fiat knittlng frames.

It is an ob ect of my invention to eliminate in these mac es frictionbetween the needle and the presser head.

' To this endl I provide a movable presser head'and means for moving thehead and the needle bar at the same velocity and in. the same directionwhile the presser bar is in contact with the needles.

My invention offers important advantages with respect to the pressingand landing of the loops as compared with the existing machines.Heretofore the needle and the presser head were displaced with respectto each other while in contact, the closed needle head slidingl alongthe presser head during v presser head frame 3 1s itted to reciprocatethe landing of the loop.

According to my invention the needle and the presser head are moved inthe same direction until they are separated during knocking-over. Bythese means friction between the needle and the presser head iseliminated altogether, preventingdamage to tlie needle and to thepresser head. ar-

'ticularly, breaking of the needle head arid seizing of the needle headin the presser head are avoided. As friction is eliminated the speed ofthe machine may be Igreatly increased as heating of the needles and thepresser cannot now occur.

. In the drawings ailixed to this specification and forming part thereofa machine embodying my invention is illustrated diagrammatically by wayof example.

1n the drawings Fig. 1 is a, sectional elevation of the completemachine,

Fig. 2 is a sectional elevation of the knitting frame of the machinedrawn to a larger scale,

U4Figs. 3 and 4 illustrate tworelative positions of the presser head andthe needle, and

Fi 5 is adetail showing a rail for guiding t e presser head. Referringnow to the drawings and first to" Fig. l, 13 is the frame vof themachine, 14 is, the` main driving shaft which is mounted to rotate inthe `frame, 15 is a'I cam plate with M ACHINE 424,304, and in GermanyFebruary 5, 1929.

shaft 14, 6 is a rocking leverfor operating the presser head 1, 17 is aroller at the lower end of the lever 6, and 17 is a spring which' isanchored `at asuitable point of the frame and with its free end isattached to the lower end of the lever 6 soas to hold the roller 17permanently engaged with the cam plate 15.

The lever 6 is ke' ed on a shaft 4. 5 is a lever which is also eyed onthe shaft 4 and serves forreciprocating the frame 3 of the presserhead 1. The presser head 1 is divided or comb-shaped in the usual mannerfor cooperation with the jack sinkers 10`and vthe knock-over jacks 11.18 is a pin at the` lower end of the frame 3 which is engaged .by aslotted eye 19 i:,ithe end of the lever 5.1

12 is the knitting frame on which the 9 is the Iieedle bar `with theneedles 8.

The needle bar is connected with the usual frame 20 Awhich is fitted torock abo/utv a pivot 21 while it is reciprocated vertically.

For sinking the parts are in the position illustrated in Fi 2. Thepresser plates 1 have been raise between the knock-over ,fjacks towithin reach of the sinkers 10, while tleir rear faces slide on the rail7.

Referring now to Fig. 3, the needle. bar 9 with the needles 8 islowered, while the presser plate 1 still is in the position illustratedin Fig. 2, closing the needle heads. When the needle bar 9 is loweredfurther for landing the ldops, the lever 6'is rocked 'by the cam 16 andthe lever 5 moves down the frame 3 at the same velocity as the needlebarf9, so that the presser plates 1 and the needle bar 9 descend inunison and at no a single elevation 16,'which iskeyed on the the sameve1ocity,\withoitfriction. When' the needles have completed theirdescent they are moved to the right from the osition in Fig. 4 forknocking over, an( are separated from the presser plates 1 which now arereturned into the initial position, F ig. 2, by the lever 5. After thelooping operation has been completed the needles 8 are also returnedinto the initial position, Fig. 2.

It will be understood that frictonal contact between the needles 8 andthe presser plates l occurs only on the comparatively short distancerequired for closing the needle heads. Otherwise the needles and thepresser plate either move in unison or are separated.

I wish it to be understood that I do not desirel to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

In the claim ailixed to this specification no selection of anyparticular modification of the invention is intended to the exclusion ofother modifications thereof and the right to subsequently make claim toany niodication not covered by this claim is expressly reserved.

A flat hosiery machine comprising a presser-head frame, a needle bar,needles in said bar, sinkers adapted to cooperate with said means, adivided presser plate in said frame for each needle and means for movingsaid frame and said needle bar at the same velocity and in the samedirection while the members of said divided presser plate are in contactwith their respective needles.

In testimony whereof I atlix my signature.

FRITZ LSSIG.

